Patents by Inventor Llewellyn Everett Williams

Llewellyn Everett Williams has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Brake for self-propelled vehicle
    Patent number: 5894714
    Abstract: A self-propelled vehicle is provided with a main speed control lever and a brake for preventing rotation of drive wheels. When an operator places the main speed control lever in a stop position, the vehicle's transmission in shifted to a neutral or near-neutral position and the brake is engaged.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: April 20, 1999
    Assignee: Deere & Company
    Inventors: Stephen Alphonse Braun, Llewellyn Everett Williams
  • Control for hydrostatic transmissions
    Patent number: 5848520
    Abstract: A vehicle having a hydrostatic transmission is provided with a main speed control lever for governing the vehicle's maximum forward speed and an independently adjustable tracking control mechanism for coordinating output of left and right hydraulic wheel motors.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: December 15, 1998
    Assignee: Deere & Company
    Inventors: Jack Edward Arfstrom, Stephen Alphonse Braun, Llewellyn Everett Williams